Date: Wed, 22 Aug 2007 03:21:32 -0700 (PDT) From: Arne "Wörner" <arne_woerner@yahoo.com> To: usleepless@gmail.com Cc: freebsd-multimedia@freebsd.org Subject: Re: ports/pvr250 / Hauppauge PVR250 on ECS K7VMM+ Message-ID: <447001.69583.qm@web30304.mail.mud.yahoo.com>
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I just found out, that there is a strong correlation between ATA DMA mode and a
failure to refill the ring buffer (so that cxm_read() doesnt return, which
looks like a stall)...
When I use ata mode PIO4 everything works fine (but the CPU is very busy with
disk transfer things)... :-)
Is it possible, that the cxm driver makes something wrong with its DMA
transfers?
-Arne
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